Slipcover for seating furniture



FIG. 1 is a front elevational view showing a slipcover for seating furniture showing my new design therefor;

FIG. 2 is a side elevational view thereof, the right side being an identical mirror image;

FIG. 3 is a left rear top perspective view thereof; and,

FIG. 4 is a top plan view thereof. 

The ornamental design for a slipcover for seating furniture, as shown and described. 